ARM: dts: bcm2835: Add Unicam CSI nodes

Add both MIPI CSI-2 nodes in the bcm283x tree and take care of the
Raspberry Pi / BCM2711 specific in the related files.

Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/20240424153542.32503-6-laurent.pinchart@ideasonboard.com


Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>